package com.mac.intellect_flow.sys.service.impl;

import com.mac.intellect_flow.enums.ResultCodeEnum;
import com.mac.intellect_flow.except.ServiceException;
import com.mac.intellect_flow.redis.util.RedisUtil;
import com.mac.intellect_flow.sys.constant.SysConstant;
import com.mac.intellect_flow.sys.entity.SysUser;
import com.mac.intellect_flow.sys.model.RegisterBody;
import com.mac.intellect_flow.sys.service.SysConfigService;
import com.mac.intellect_flow.sys.service.SysRegisterService;
import com.mac.intellect_flow.sys.service.SysUserService;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.stereotype.Component;

/**
 * 注册校验方法
 * 
 * @author mac
 */
@Component
public class SysRegisterServiceImpl implements SysRegisterService {
    @Autowired
    private SysUserService userService;

    @Autowired
    private SysConfigService configService;

    @Autowired
    private RedisUtil redisCache;

    @Autowired
    private BCryptPasswordEncoder passwordEncoder;

    /**
     * 注册
     */
    @Override
    public String register(RegisterBody registerBody) {
        String msg = "", username = registerBody.getUsername(), password = registerBody.getPassword();
        SysUser sysUser = new SysUser();
        sysUser.setUsername(username);

        // 验证码开关
        boolean captchaEnabled = configService.selectCaptchaEnabled();
        if (captchaEnabled) {
            validateCaptcha(username, registerBody.getCode(), registerBody.getUuid());
        }

        if (StringUtils.isEmpty(username)) {
            msg = "用户名不能为空";
        }
        else if (StringUtils.isEmpty(password))
        {
            msg = "用户密码不能为空";
        }
        else if (username.length() < SysConstant.USERNAME_MIN_LENGTH
                || username.length() > SysConstant.USERNAME_MAX_LENGTH)
        {
            msg = "账户长度必须在2到20个字符之间";
        }
        else if (password.length() < SysConstant.PASSWORD_MIN_LENGTH
                || password.length() > SysConstant.PASSWORD_MAX_LENGTH)
        {
            msg = "密码长度必须在5到20个字符之间";
        }
        else if (!userService.checkUserNameUnique(sysUser))
        {
            msg = "保存用户'" + username + "'失败，注册账号已存在";
        }
        else
        {
            sysUser.setNickName(username);
            sysUser.setPassword(passwordEncoder.encode(password));
            boolean regFlag = userService.registerUser(sysUser);
            if (!regFlag)
            {
                msg = "注册失败,请联系系统管理人员";
            }
        }
        return msg;
    }

    /**
     * 校验验证码
     * 
     * @param username 用户名
     * @param code 验证码
     * @param uuid 唯一标识
     * @return 结果
     */
    public void validateCaptcha(String username, String code, String uuid) {
        String verifyKey = SysConstant.CAPTCHA_CODE_KEY + StringUtils.defaultIfEmpty(uuid, "");
        String captcha = redisCache.getCacheObject(verifyKey);
        redisCache.deleteObject(verifyKey);
        if (captcha == null) {
            throw new ServiceException(ResultCodeEnum.INTERNAL_SERVER_ERROR.getCode(),"验证码已失效");
        }
        if (!code.equalsIgnoreCase(captcha)) {
            throw new ServiceException(ResultCodeEnum.INTERNAL_SERVER_ERROR.getCode(),"验证码错误");
        }
    }
}
